42780650503 has 2 divisors, whose sum is σ = 42780650504. Its totient is φ = 42780650502.

The previous prime is 42780650461. The next prime is 42780650519. The reversal of 42780650503 is 30505608724.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42780650503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42780650573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21390325251 + 21390325252.

It is an arithmetic number, because the mean of its divisors is an integer number (21390325252).

Almost surely, 2^42780650503 is an apocalyptic number.

42780650503 is a deficient number, since it is larger than the sum of its proper divisors (1).

42780650503 is an equidigital number, since it uses as much as digits as its factorization.

42780650503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 42780650503 in words is "forty-two billion, seven hundred eighty million, six hundred fifty thousand, five hundred three".